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Engine-Codes – Ford – P0068 2008 Ford Fusion

P0068 2008 Ford Fusion Code - Manifold Absolute Pressure/Mass Air Flow Sensor - Throttle Position Correlation

Quick Answer

The P0068 code for a 2008 Ford Fusion indicates a problem with the correlation between the Manifold Absolute Pressure/Mass Air Flow Sensor and the Throttle Position Sensor. Common causes include Faulty Manifold Absolute Pressure (MAP) sensor, Faulty Mass Air Flow (MAF) sensor, Faulty Throttle Position Sensor (TPS). Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0068 2008 Ford Fusion indicates Manifold Absolute Pressure/Mass Air Flow Sensor - Throttle Position Correlation.
Common causes
Common causes include Faulty Manifold Absolute Pressure (MAP) sensor, Faulty Mass Air Flow (MAF) sensor, Faulty Throttle Position Sensor (TPS).
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0068 2008 Ford Fusion Description

The P0068 code for a 2008 Ford Fusion indicates a problem with the correlation between the Manifold Absolute Pressure/Mass Air Flow Sensor and the Throttle Position Sensor. These sensors play crucial roles in the proper functioning of the engine and its performance. The Manifold Absolute Pressure (MAP) sensor measures the pressure inside the intake manifold, while the Mass Air Flow (MAF) sensor measures the amount of air entering the engine. The Throttle Position Sensor (TPS) monitors the position of the throttle valve.

OBDII Code P0068 2008 Ford Fusion - Manifold Absolute Pressure/Mass Air Flow Sensor - Throttle Position Correlation
P0068 2008 Ford Fusion Code - Manifold Absolute Pressure/Mass Air Flow Sensor - Throttle Position Correlation

Common Causes of P0068 2008 Ford Fusion

  1. Faulty Manifold Absolute Pressure (MAP) sensor
  2. Faulty Mass Air Flow (MAF) sensor
  3. Faulty Throttle Position Sensor (TPS)
  4. Wiring issues or corrosion in the sensor circuit
  5. ECM software or hardware issues

Symptoms of P0068 2008 Ford Fusion

  1. Rough idle
  2. Hesitation during acceleration
  3. Decreased fuel efficiency
  4. Engine stalling
  5. Check Engine Light illuminated

How to Fix P0068 2008 Ford Fusion

  1. Begin by diagnosing the specific sensor that is causing the correlation issue by using a diagnostic scanner to read the trouble code and sensor data.
  2. Inspect the wiring and connections of the sensors for any damage or corrosion. Replace any damaged wiring or connectors.
  3. Test each sensor individually to determine which one is faulty. Replace the faulty sensor(s) with a new one.
  4. Clear the trouble code from the ECM memory using the diagnostic scanner.
  5. Test drive the vehicle to ensure that the issue has been resolved and that the Check Engine Light does not reappear.

Cost to Fix P0068 2008 Ford Fusion

The cost of repairing a P0068 code on a 2008 Ford Fusion can vary depending on the specific sensor that needs to be replaced and the labor rates of the auto repair shop. On average, the cost of replacing a sensor can range from $100 to $300, with additional costs for diagnostic time and labor. It's advisable to check with local auto repair shops for a more accurate estimate based on your location and vehicle specifics.

What does this mean?

Tech Notes for P0068 2008 Ford Fusion

Check for intake leaks if none are found, you can try to clean the air flow meter with mass air flow sensor cleaner and the throttle plate which gets dirty and may cause the Throttle Position (TP) sensor to give an incorrect reading.

When is the Code Detected?

The Powertrain Control Module (PCM) monitors operation rationality check by comparing sensed throttle position to mass air flow readings

Need more information about the P0068 2008 Ford Fusion code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0068 2008 Ford Fusion Code

1. What are the common symptoms of OBDII code P0068 on a 2008 Ford Fusion?

The common symptoms of code P0068 include rough idling, poor acceleration, engine stalling, and a decrease in fuel efficiency.

2. What does the OBDII code P0068 indicate for a 2008 Ford Fusion?

Code P0068 indicates an issue with the correlation between the Manifold Absolute Pressure (MAP) sensor, Mass Air Flow (MAF) sensor, and Throttle Position Sensor (TPS).

3. What are the possible causes of OBDII code P0068 on a 2008 Ford Fusion?

Possible causes of code P0068 include a faulty MAP sensor, MAF sensor, TPS, wiring issues, vacuum leaks, or a problem with the intake manifold.

4. How can I diagnose the OBDII code P0068 on a 2008 Ford Fusion?

Diagnosing code P0068 involves checking the MAP sensor, MAF sensor, TPS, and related wiring for any signs of damage or malfunction using a diagnostic scanner.

5. Can I continue to drive my 2008 Ford Fusion with OBDII code P0068?

It is not recommended to drive your Fusion with code P0068 as it can lead to further damage to the engine components and negatively impact performance.

6. How can I repair OBDII code P0068 on a 2008 Ford Fusion?

Repairing code P0068 may involve replacing the faulty MAP sensor, MAF sensor, TPS, or repairing any wiring issues. It's recommended to consult a professional mechanic for an accurate diagnosis and repair.

7. Are there any DIY tips for fixing OBDII code P0068 on a 2008 Ford Fusion?

While some basic checks like inspecting the sensor connections and vacuum hoses can be done DIY, it's best to seek professional help for a thorough diagnosis and repair of code P0068.

8. What is the importance of the Manifold Absolute Pressure sensor in the context of OBDII code P0068?

The MAP sensor measures the pressure within the intake manifold and helps the engine control module optimize air-fuel mixture, making it crucial for proper engine performance.

9. How does the Mass Air Flow sensor relate to OBDII code P0068 on a 2008 Ford Fusion?

The MAF sensor measures the amount of air entering the engine to adjust fuel delivery, and a malfunctioning MAF sensor can trigger code P0068 due to the correlation with other sensors.

10. Can a dirty air filter cause OBDII code P0068 on a 2008 Ford Fusion?

A dirty air filter can indirectly affect the readings of the MAF sensor, potentially leading to issues with the correlation between sensors and triggering code P0068. Regular air filter maintenance is recommended.

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